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cppCom.l
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161 lines (124 loc) · 8.14 KB
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%{
#include <stdio.h>
#include <stdbool.h>
int yyerror(char *errMsg, int line, bool nl);
int line = 1;
size_t findIndex(const char *arr[], const char *val, int arrLen);
const char *KEYWORDS[] = {"auto", "break", "const", "continue", "delete", "else", "for", "if", "return", "struct", "typedef", "true", "false"};
// 13
// !X! cin, cout !X!
const char *OPERRATORS[] = {"+", "-", "*", "/", "+=", "-=", "*=", "/=", "++", "--", "&&", "||", "&", "|", "=", "==", "<<", ">>", "<", ">", ",", ";"};
// 22
%}
NEWLINE [\n]
WHITESPACE [ \t]
EOF <EOF>|"eof"|"end"
COMMENT "~!".*"\n"
PARENTHESIS "("|")"|"["|"]"|"{"|"}"
INCLUDE "#include"[ ]*"<"{INCLUDENAME}">"
INCLUDENAME [_a-zA-Z0-9\.\-]+
IDENTIFIRE ("_"[_a-zA-Z0-9]+)|([a-zA-Z][_a-zA-Z0-9]*)
INT 0|([0]?[1-9][0-9]*)
FLOAT [0-9]*\.[0-9]+
DIGITSING "+"|"-"
SIGNEDINT {DIGITSING}{INT}
SIGNEDFLOAT {DIGITSING}{FLOAT}
STRING (\".*\")|(\"(\\.|[^"\\])*\")
VARINC {IDENTIFIRE}"++"
VARDEC {IDENTIFIRE}"--"
DATATYPE "int"|"float"|"char"|"str"
UNS "using namespace"[ ]+{IDENTIFIRE}
%%
{WHITESPACE} {/* NOP */}
{NEWLINE} { line++ ;}
{EOF} {printf("\nThe End Of File.\n"); return 0;}
{COMMENT} {printf("#TOKEN: %d# | #TYPE: COMMENT#\n", 47);}
"auto" {printf("#TOKEN: 0%d# | #TYPE: KEYWORD#\t->\t< ", findIndex(KEYWORDS, yytext, 13)); ECHO; printf(" >\n");}
"break" {printf("#TOKEN: 0%d# | #TYPE: KEYWORD#\t->\t< ", findIndex(KEYWORDS, yytext, 13)); ECHO; printf(" >\n");}
"const" {printf("#TOKEN: 0%d# | #TYPE: KEYWORD#\t->\t< ", findIndex(KEYWORDS, yytext, 13)); ECHO; printf(" >\n");}
"continue" {printf("#TOKEN: 0%d# | #TYPE: KEYWORD#\t->\t< ", findIndex(KEYWORDS, yytext, 13)); ECHO; printf(" >\n");}
"delete" {printf("#TOKEN: 0%d# | #TYPE: KEYWORD#\t->\t< ", findIndex(KEYWORDS, yytext, 13)); ECHO; printf(" >\n");}
"else" {printf("#TOKEN: 0%d# | #TYPE: KEYWORD#\t->\t< ", findIndex(KEYWORDS, yytext, 13)); ECHO; printf(" >\n");}
"for" {printf("#TOKEN: 0%d# | #TYPE: KEYWORD#\t->\t< ", findIndex(KEYWORDS, yytext, 13)); ECHO; printf(" >\n");}
"if" {printf("#TOKEN: 0%d# | #TYPE: KEYWORD#\t->\t< ", findIndex(KEYWORDS, yytext, 13)); ECHO; printf(" >\n");}
"return" {printf("#TOKEN: 0%d# | #TYPE: KEYWORD#\t->\t< ", findIndex(KEYWORDS, yytext, 13)); ECHO; printf(" >\n");}
"struct" {printf("#TOKEN: 0%d# | #TYPE: KEYWORD#\t->\t< ", findIndex(KEYWORDS, yytext, 13)); ECHO; printf(" >\n");}
"typedef" {printf("#TOKEN: %d# | #TYPE: KEYWORD#\t->\t< ", findIndex(KEYWORDS, yytext, 13)); ECHO; printf(" >\n");}
"true" {printf("#TOKEN: %d# | #TYPE: KEYWORD#\t->\t< ", findIndex(KEYWORDS, yytext, 13)); ECHO; printf(" >\n");}
"false" {printf("#TOKEN: %d# | #TYPE: KEYWORD#\t->\t< ", findIndex(KEYWORDS, yytext, 13)); ECHO; printf(" >\n");}
"+" {printf("#TOKEN: %d# | #TYPE: OPERRATOR#\t->\t< ", findIndex(OPERRATORS, yytext, 22)); ECHO; printf(" >\n");}
"-" {printf("#TOKEN: %d# | #TYPE: OPERRATOR#\t->\t< ", findIndex(OPERRATORS, yytext, 22)); ECHO; printf(" >\n");}
"*" {printf("#TOKEN: %d# | #TYPE: OPERRATOR#\t->\t< ", findIndex(OPERRATORS, yytext, 22)); ECHO; printf(" >\n");}
"/" {printf("#TOKEN: %d# | #TYPE: OPERRATOR#\t->\t< ", findIndex(OPERRATORS, yytext, 22)); ECHO; printf(" >\n");}
"+=" {printf("#TOKEN: %d# | #TYPE: OPERRATOR#\t->\t< ", findIndex(OPERRATORS, yytext, 22)); ECHO; printf(" >\n");}
"-=" {printf("#TOKEN: %d# | #TYPE: OPERRATOR#\t->\t< ", findIndex(OPERRATORS, yytext, 22)); ECHO; printf(" >\n");}
"*=" {printf("#TOKEN: %d# | #TYPE: OPERRATOR#\t->\t< ", findIndex(OPERRATORS, yytext, 22)); ECHO; printf(" >\n");}
"/=" {printf("#TOKEN: %d# | #TYPE: OPERRATOR#\t->\t< ", findIndex(OPERRATORS, yytext, 22)); ECHO; printf(" >\n");}
"++" {printf("#TOKEN: %d# | #TYPE: OPERRATOR#\t->\t< ", findIndex(OPERRATORS, yytext, 22)); ECHO; printf(" >\n");}
"--" {printf("#TOKEN: %d# | #TYPE: OPERRATOR#\t->\t< ", findIndex(OPERRATORS, yytext, 22)); ECHO; printf(" >\n");}
"&&" {printf("#TOKEN: %d# | #TYPE: OPERRATOR#\t->\t< ", findIndex(OPERRATORS, yytext, 22)); ECHO; printf(" >\n");}
"||" {printf("#TOKEN: %d# | #TYPE: OPERRATOR#\t->\t< ", findIndex(OPERRATORS, yytext, 22)); ECHO; printf(" >\n");}
"&" {printf("#TOKEN: %d# | #TYPE: OPERRATOR#\t->\t< ", findIndex(OPERRATORS, yytext, 22)); ECHO; printf(" >\n");}
"|" {printf("#TOKEN: %d# | #TYPE: OPERRATOR#\t->\t< ", findIndex(OPERRATORS, yytext, 22)); ECHO; printf(" >\n");}
"=" {printf("#TOKEN: %d# | #TYPE: OPERRATOR#\t->\t< ", findIndex(OPERRATORS, yytext, 22)); ECHO; printf(" >\n");}
"==" {printf("#TOKEN: %d# | #TYPE: OPERRATOR#\t->\t< ", findIndex(OPERRATORS, yytext, 22)); ECHO; printf(" >\n");}
"<<" {printf("#TOKEN: %d# | #TYPE: OPERRATOR#\t->\t< ", findIndex(OPERRATORS, yytext, 22)); ECHO; printf(" >\n");}
">>" {printf("#TOKEN: %d# | #TYPE: OPERRATOR#\t->\t< ", findIndex(OPERRATORS, yytext, 22)); ECHO; printf(" >\n");}
"<" {printf("#TOKEN: %d# | #TYPE: OPERRATOR#\t->\t< ", findIndex(OPERRATORS, yytext, 22)); ECHO; printf(" >\n");}
">" {printf("#TOKEN: %d# | #TYPE: OPERRATOR#\t->\t< ", findIndex(OPERRATORS, yytext, 22)); ECHO; printf(" >\n");}
"," {printf("#TOKEN: %d# | #TYPE: SEPERATOR#\t->\t< ", findIndex(OPERRATORS, yytext, 22)); ECHO; printf(" >\n");}
; {printf("#TOKEN: %d# | #TYPE: SEMICOLON#\t->\t< ", 34); ECHO; printf(" >\n");}
{STRING} {printf("#TOKEN: %d# | #TYPE: STRING#\t->\t", 35); ECHO; printf("\n");}
{INCLUDE} {printf("#TOKEN: %d# | #TYPE: INCLUDE#\t->\t", 36); ECHO; printf("\n");}
{PARENTHESIS} {printf("#TOKEN: %d# | #TYPE: PARENTHESES#\t->\t", 37); ECHO; printf("\n");}
{DATATYPE} {printf("#TOKEN: %d# | #TYPE: DATA TYPE#\t->\t", 45); ECHO; printf("\n");}
{INT} {printf("#TOKEN: %d# | #TYPE: INT VALUE#\t->\t", 39); ECHO; printf("\n");}
{FLOAT} {printf("#TOKEN: %d# | #TYPE: FLOAT VALUE#\t->\t", 40); ECHO; printf("\n");}
{SIGNEDINT} {printf("#TOKEN: %d# | #TYPE: SIGNED INT VALUE#\t->\t", 41); ECHO; printf("\n");}
{SIGNEDFLOAT} {printf("#TOKEN: %d# | #TYPE: SIGNED FLOAT VALUE#\t->\t", 42); ECHO; printf("\n");}
{VARINC} {printf("#TOKEN: %d# | #TYPE: INCRISE VARIABLE#\t->\t", 43); ECHO; printf("\n");}
{VARDEC} {printf("#TOKEN: %d# | #TYPE: DECRISE VARIABLE#\t->\t", 44); ECHO; printf("\n");}
{UNS} {printf("#TOKEN: %d# | #TYPE: NAMESPACE#\t->\t", 46); ECHO; printf("\n");}
{IDENTIFIRE} {printf("#TOKEN: %d# | #TYPE: IDENTIFIRE#\t->\t", 38); ECHO; printf("\n");}
. {yyerror("!!ERROR!! | UNKNOWN CHAR IN LINE:", line, 0); ECHO; printf(">\n\n"); exit(1);}
%%
int yywrap(void)
{
return 1;
}
int main(int argc, char **argv)
{
FILE *fp;
char filename[1024];
printf("Enter the filename: \n");
scanf("%s", filename);
fp = fopen(filename, "r");
yyin = fp;
yylex();
return 0;
}
int yyerror(char *errMsg, int line, bool nl)
{
if (nl)
fprintf(stderr, "\n%s %d\t<\n\n", errMsg, line);
else
fprintf(stderr, "\n%s %d\t<", errMsg, line);
}
size_t findIndex(const char *arr[], const char *val, int arrLen)
{
// int arrLen = 0;
// while (arr[arrLen++] != NULL) {};
// int arrLen = sizeof(arr) / sizeof(char*);
// printf("%d\n", arrLen);
size_t index = -1;
for (size_t i = 0; i < arrLen; i++)
{
if (!strcmp(arr[i], val))
{
index = i;
break;
}
}
if (arr == OPERRATORS && index != -1){return index+13;}
return index;
}